Selection of Value for Amplifier Card Resistor R9

TM 11-6625-646-15

indicates 10 units to the left of null. Record the

OUPT. Operate the 115V 400~POWER switch to on

resistance on the decade resistor.

(up) position Allow a 20-minute warmup.

g. Hold the CARD TEST SIGNAL switch at R and

adjust the decade resistor until the FUNCTION meter

NOTE

indicates 10 units to the right of null. Record the

When an amplifier card is plugged

resistance on the decade resistor.

into the TS-1894/ASM, a FUNCTION

h. Disconnect the decade resistor.

Install a

meter deviation maybe noted. If the

resistor having a standard value closest to the average

null position is more than two units

of the two values recorded in f and g above for resistor

from zero, the card is defective.

R9. The indicated resistance should not be more than

Each division on the meter scale

68 ohms.

equals two units.

i. Repeat f and g above to insure that the resistor

installed meets the test requirements.

f. Hold the CARD TEST SIGNAL switch at L.

Adjust the decade resistor until the FUNCTION meter

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